双层互承式木结构子单元设计与研究  

Design and Research of a Fan of Double-layer Reciprocal Frame in Timber Structure

作　　者：张文博 李子飞 啜二勇 刘路 ZHANG Wenbo;LI Zifei;CHUO Eryong;LIU Lu(Tianjin Transportation Research Institute,Tianjin 300074,China;China Hebei Construction&Geotechnical Investigation Group Ltd,Shijiazhuang 050227,China)

机构地区：[1]天津市交通科学研究院,天津300074 [2]中冀建勘集团有限公司,河北石家庄050227

出　　处：《土木工程与管理学报》2023年第2期92-98,共7页Journal of Civil Engineering and Management

摘　　要：单层互承结构的强度和刚度较小,抵抗地震荷载能力较弱,安全储备系数较低,为解决此问题,本文设计了一种双层互承式木构件。对樟子松木材进行了材性试验,搭建了一环双层木结构模型,并对该结构模型进行静力学试验,建立了与木结构模型同尺寸的ABAQUS有限元模型。研究结果表明:樟子松木材的强度设计值满足规范要求,可以进行木结构试验;在外荷载作用下,结构的最大应力远小于木材材性试验所得到的极限强度,结构的最大挠度远小于GB 50005—2017《木结构设计标准》所给出的设计值;ABAQUS有限元数值模拟结果与足尺试验结果相差较小,从而验证了有限元数值模型建模的准确性,并且该有限元数值模拟得出的结论偏于安全。The strength and stiffness of the single-story reciprocal frame are small and the ability to resist earthquake loads is weak with a lower safety reserve factor.In order to solve this problem,this paper designed a double-layer reciprocal frame in timber structure.Specifically,the wood material test was carried out on the Pine sylvestris wood,and a one-ring double-layer reciprocal frame model was built.An ABAQUS finite element model with the same size as the wood structure model was established through the static test of the structural model.The research results show that:the design strength value of pine sylvestris wood meets the requirements of the specification,and the wood structure test can be carried out;under the action of external load,the maximum stress of the structure is much smaller than the ultimate strength obtained by the wood property test,and the maximum deflection of the structure is much smaller than the design value given in the“Design Standard for Timber Structures”(GB 50005—2017);the difference between the ABAQUS finite element numerical simulation results and the test results is small,which verifies the accuracy of the finite element numerical model modeling,and the conclusion drawn from the simulation is safety.

关 键 词：双层互承结构 木结构 材性试验 木结构试验 有限元模拟 

分 类 号：TU366.2[建筑科学—结构工程]